FREQUENCY-DEPENDENCE OF COERCIVITY IN RAPIDLY QUENCHED AMORPHOUS MATERIALS

The frequency f and field amplitude H-0 dependence of coercivity in di fferent amorphous wire shaped materials: amorphous Fe- and Co-based wi res and microwires can be generally described as H-cd = H-co + B(fH(0) )(1/n) where H-cd is the dynamic coercivity, H-co the static coercivit y, B the coefficient depending on intrinsinc parameters of materials a nd n the coefficient ranging from 1 to 3, depending on geometry and hy steresis loop of materials. Experimental results are obtained in the f requency range up to 1 kHz. (C) 1997 Elsevier Science S.A.